<template>
  <view v-if="goods_info.goods_name">
    <!--轮播图-->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="previewImg(i)"></image>
      </swiper-item>
    </swiper>
    <!--商品信息区域-->
    <view class="goods-info-box">
      <view class="goods-price">
        {{goods_info.goods_price}}
      </view>
      <view class="goods-body">
        <view class="goods-title">
          {{goods_info.goods_name}}
        </view>
        <view class="goods-favorite">
          <uni-icons type="star" size="30"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <view class="yf">
        <text>免运费 </text>
        {{cart.length}}
      </view>
    </view>
    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!--底部标题栏-->
    <view class="goods_nav">
      <uni-goods-nav :options="options" :fill="true" :button-group="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {
    mapState,
    mapMutations,
    mapGetters
  } from 'vuex'
  export default {
    data() {
      return {
        goods_info: {},
        options: [{
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },
    computed: {
      ...mapState('m_cart', ['cart']),
      ...mapGetters('m_cart', ['total']),
    },

    watch: {
      total: {
        handler(newVal) {
          let findRes = this.options.find(i => i.text === '购物车');
          if (findRes) findRes.info = newVal;
        },
        // immediate 属性用来声明此侦听器，是否在页面初次加载完毕后立即调用
        immediate: true
      }
    },
    onLoad(option) {
      this.getGoodsDetail(option.goods_id);
    },
    methods: {
      ...mapMutations('m_cart', ['addCart']),
      onClick(e) {
        if (e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e) {
        if (e.content.text === '加入购物车') {
          let currentGoods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true,
          }
          this.addCart(currentGoods);
        }
      },
      async getGoodsDetail(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        if (res.meta.status !== 200) return uni.$showMsg()
        // 为 data 中的数据赋值
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(
          /webp/g, 'jpg')
        this.goods_info = res.message


      },
      previewImg(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(item => item.pics_big)
        })
      }
    }
  }
</script>

<style lang="scss">
  .goods_nav {
    // 为商品导航组件添加固定定位
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }

  .goods-info-box {
    padding: 10px;
    padding-right: 0;

    .goods-price {
      font-size: 18px;
      color: red;
      margin: 10px 0;
    }

    .goods-body {
      display: flex;
      justify-content: space-between;

      .goods-title {
        font-size: 13px;
        margin-right: 10px;
      }

      .goods-favorite {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: gray;
        border-left: 1px solid #efefef;

      }
    }

    .yf {
      margin: 10px 0;
      font-size: 12px;
      color: gray;
    }
  }

  swiper {
    height: 750rpx;

    image {
      width: 100%;
      height: 100%;
    }
  }
</style>
